feat: all DB projections and Tangled interop as human-readable JSON lens files Every schema transform is now a serialized protolens in packages/lenses/: - 15 Cospan DB projection lenses (Lexicon → appview view) - 6 Tangled interop lenses (sh.tangled.* → dev.cospan.*) Each lens file contains both structural transforms (remove_field, rename_field, add_field) and semantic transforms (expr with panproto expression language: at_uri_extract_did, concat, match, path_extract). Format: human-readable JSON, can be compiled to msgpack at build time. Single source of truth for all schema-to-view and cross-schema mappings.

1+{
2+  "$type": "panproto.protolens",
3+  "id": "dev.cospan.actor.profile.db-projection",
4+  "description": "Lexicon → appview DB projection for actor profiles",
5+  "source": "dev.cospan.actor.profile",
6+  "target": "dev.cospan.actor.profile.view",
7+  "steps": [
8+    { "remove_field": "avatar" },
9+    { "remove_field": "links" },
10+    {
11+      "add_field": {
12+        "name": "avatarCid",
13+        "kind": "string",
14+        "default": null,
15+        "expr": "path_extract(avatar, ['ref', '$link'])"
16+      }
17+    }
18+  ]
19+}

1+{
2+  "$type": "panproto.protolens",
3+  "id": "dev.cospan.label.definition.db-projection",
4+  "source": "dev.cospan.label.definition",
5+  "target": "dev.cospan.label.definition.view",
6+  "steps": [
7+    { "remove_field": "repo" },
8+    {
9+      "add_field": {
10+        "name": "repoDid",
11+        "kind": "string",
12+        "default": "",
13+        "expr": "head(split(replace(repo, 'at://', ''), '/'))"
14+      }
15+    },
16+    {
17+      "add_field": {
18+        "name": "repoName",
19+        "kind": "string",
20+        "default": "",
21+        "expr": "index(split(replace(repo, 'at://', ''), '/'), 2)"
22+      }
23+    }
24+  ]
25+}

1+{
2+  "$type": "panproto.protolens",
3+  "id": "dev.cospan.org.db-projection",
4+  "source": "dev.cospan.org",
5+  "target": "dev.cospan.org.view",
6+  "steps": [
7+    { "remove_field": "avatar" },
8+    {
9+      "add_field": {
10+        "name": "avatarCid",
11+        "kind": "string",
12+        "default": null,
13+        "expr": "path_extract(avatar, ['ref', '$link'])"
14+      }
15+    }
16+  ]
17+}

1+{
2+  "$type": "panproto.protolens",
3+  "id": "dev.cospan.org.member.db-projection",
4+  "source": "dev.cospan.org.member",
5+  "target": "dev.cospan.org.member.view",
6+  "steps": [
7+    { "rename_field": { "old": "org", "new": "orgUri" } },
8+    { "rename_field": { "old": "member", "new": "memberDid" } }
9+  ]
10+}

1+{
2+  "$type": "panproto.protolens",
3+  "id": "dev.cospan.pipeline.db-projection",
4+  "source": "dev.cospan.pipeline",
5+  "target": "dev.cospan.pipeline.view",
6+  "steps": [
7+    { "remove_field": "repo" },
8+    { "remove_field": "algebraicChecks" },
9+    {
10+      "add_field": {
11+        "name": "repoDid",
12+        "kind": "string",
13+        "default": "",
14+        "expr": "head(split(replace(repo, 'at://', ''), '/'))"
15+      }
16+    },
17+    {
18+      "add_field": {
19+        "name": "repoName",
20+        "kind": "string",
21+        "default": "",
22+        "expr": "index(split(replace(repo, 'at://', ''), '/'), 2)"
23+      }
24+    },
25+    {
26+      "add_field": {
27+        "name": "status",
28+        "kind": "string",
29+        "default": "pending"
30+      }
31+    },
32+    {
33+      "add_field": {
34+        "name": "gatTypeCheck",
35+        "kind": "string",
36+        "default": null,
37+        "expr": "path_extract(algebraicChecks, ['gatTypeCheck'])"
38+      }
39+    },
40+    {
41+      "add_field": {
42+        "name": "equationVerification",
43+        "kind": "string",
44+        "default": null,
45+        "expr": "path_extract(algebraicChecks, ['equationVerification'])"
46+      }
47+    },
48+    {
49+      "add_field": {
50+        "name": "lensLawCheck",
51+        "kind": "string",
52+        "default": null,
53+        "expr": "path_extract(algebraicChecks, ['lensLawCheck'])"
54+      }
55+    },
56+    {
57+      "add_field": {
58+        "name": "breakingChangeCheck",
59+        "kind": "string",
60+        "default": null,
61+        "expr": "path_extract(algebraicChecks, ['breakingChangeCheck'])"
62+      }
63+    }
64+  ]
65+}